摘要
研究目的:通过对渝怀线、宜万线重点岩溶隧道水压力实测,研究岩溶隧道初始水压力值的影响因素、计算公式;通过对水压力长时间监测,研究水压力降雨响应;通过监测水压力值,绘制水压力曲线,并分析曲线特征,对岩溶隧道的堵水治理提供参考;对注浆后水压力分析,提出注浆后二次衬砌水压力设防建议。研究结论:岩溶隧道水压力与上、下排泄基准面高程和排泄能力有关,不能采用折减系数法确定。水压力对降雨有强烈响应。放水后升压试验能反映岩溶几何形态。衬砌结构设防应根据地质条件、原始水压力值和注浆效果确定。
Research purposes： Based on the real measurements of water pressures of the tunnels on Chongqing -Huaihua Railway and Yichang- Wanzhou Railway, the researches are done on the effect factors and calculation formula for the original water pressure of the karst tunnel as well as on influence of rainfall on the water pressure. Based on the monitored values of water pressure, the curve of the water pressure is mapped and the analysis of its characteristics is made. The proposals are made for conducting secondary lining against the water pressure after making analysis of the water pressure after grouting.
Research conclusions： The water pressure of the karst tunnel relates to the basic elevation of drainage facilities on the up and bottom and their drainage capacity, so the water pressure can not be determined by deducting the coefficient. The water pressure has responds to the rainfall. The boosting test of the water pressure after drainage can reflect the karst geometrical figure. The design of secondary lining structure should be made according to the geological conditions,original water pressure and grouting ettects.
出处
《铁道工程学报》
EI
北大核心
2008年第5期53-58,共6页
Journal of Railway Engineering Society
关键词
岩溶隧道
初始水压力
降雨响应
二次衬砌设防
karst tunnel
original water pressure
rainfall respond
secondary lining
